AuthShield

A simple role based authentication system

Installation

npm i auth-shield

How it Works

• There is a Set of Permission and a Set of Role
• One Object that map role with it's Permission
• A middleware that get the role from req.role or req.user.role and check if that role have required Permission
• if have call next()
• if not give response with 403 status code

Note You have to set a role field in your model if you use jwt then you have to sign role information and both role name in database should exactly match auth-shield role

Setup

1 ) require and call AuthShield function to store return value

const {AuthShield} = require("auth-shield")
const shield = AuthShield()  //you can name according to your wish

2) add all the role you have in your Database model

shield.addRole(["user","vendor","admin"]) // added user, vendor, admin to the role list

3) add all the permission you want to use

shield.addPermission(["sell","buy","ban"])  // added sell, buy and ban permission to the permission list

4) grant the permission to the role

shield.givePermission("user",["buy"])   //now user can pass the buy permission protected route
shield.givePermission("vendor",["sell"])    //now vendor can pass the sell permission protected route
shield.givePermission("admin",["ban"])  // now admin can pass the ban permission protected route

5) now secure the route with permission

Note use a middleware to set role in the req.role or in req.user.role

• protect /buy route with 'buy' permission
• protect /sell route with 'sell' permission
• protect /ban route with 'ban' permission

router.post("/buy", YourMiddleware, shield.validatePermission("buy") , buyController) 
router.post("/sell", YourMiddleware, shield.validatePermission("sell"), sellController)
router.put("/ban", YourMiddleware, shield.validatePermission("ban"), banController)

done ✅

other usefull method

log everything

shield.status() // console log the everything in auth-shield system data

log role and permission list

shield.getRoleList() //return role list here : ["user", "vendor", "admin"]
shield.getRoleList(true) // return role list with console log

shield.getPermissionList() //return permission list here : ["buy", "sell", "ban"]
shield.getPermissionList(true)  //return permission list with console log

check if a role or permission exist

shield.existRole("vendor")  // true if exist else false here : true as vendor role exist
shield.existRole("seller", true)  // will log the result here : false as no seller role exist

shield.existPermission("read")  // true if exist else false here : false as read permission exist
shield.existPermission("sell", true)    // will log the result here : true as sell permission exit

shield.getPermissionRoleMap()   // return role and permission map as Object
shield.getPermissionRoleMap(true)   // log the result

check who have these permission

shield.getRoleWithPermission("sell")    // result : ["vendor"] 
shield.getRoleWithPermission("sell", true)  // will log result in the console

check permission of a role

shield.getPermissionOf("user")  // result : ["buy"]
shield.getPermissionOf("user", true) // will log the result in the console

crud permission and role

shield.addRole("support")  // added suport role in the role list
shield.renameRole("user","customer")    // user role is not renamed to customer
shield.deleteRole("support")    //delete support from role list and remove all permission of this role

shield.addPermission(["read-user-data","delete-product","add-product"]) // added permission to use
shield.givePermission("admin",["read-user-data","delete-product"])  // granted admin with these permission
shield.removePermission("admin",["read-user-data"]) // removed permission from the admin not from the permission list
shield.deletePermission(["delete-product","add-product"])   // it will remove these permission from both role and permission list

reset permission list and role list

shield.resetPermissionList()    //reset permission list
shield.resetRoleList()  //reset role list

Author

@github-MHRSRoni

@Mail me